JP2001055702A - Emulsion spraying apparatus in paving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent clogging of a conduit of an emulsion spraying apparatus, by providing a cleaning means for cleaning the apparatus, to thereby prevent solidification of emulsion in the conduit at the time of stopping spray of the emulsion, or the like. SOLUTION: At the time of spraying emulsion, the emulsion in an emulsion tank 7 is sprayed from a spray nozzle 10a to a bedrock by means of a pump 12. At the time of circulating the emulsion before the spraying or the like, the emulsion in the tank 7, which has been heated by a heater, is circulated through a conduit by means of the pump 12, to thereby keep warm the conduit 14 and a spray portion. When the emulsion is charged in the tank 7 or discharged from the tank 7, an emulsion supply/exhaust port of an emulsion supply vehicle is connected to an external connection port 18. Further, when the emulsion spraying apparatus is cleaned after completion of the spraying operation, the pump 12 is driven, to thereby return a cleaning liquid in the tank 11 through predetermined passages such as a spray bar 10, the pump 12, a filter 13, a pipe 14, and a valve 15, to the tank 11. Further, the cleaning liquid is injected from the spray nozzle 10a. Thus, clogging of the channels due to coagulation of the emulsion remaining in the respective channels can be prevented, to thereby increase the reliability of emulsion spray.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of pavement machines such as asphalt finishers.

[0002]

2. Description of the Related Art Generally, a paving machine such as an asphalt finisher includes a bar feeder for conveying a pavement mixture put into a hopper to the rear of the machine, a screw spreader for spreading the conveyed mixture on a base, and a screw spreader. Some components are provided with various member devices such as a spreading device for spreading the spread mixed material, but in addition to these member devices, an emulsion for bonding the base and the mixed material is further added. A pavement machine having an emulsion dispersing device for dispersing is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-7.
No. 2805. In a paving machine equipped with such an emulsion dispersing apparatus, the emulsion is sent from an emulsion tank to a spray section via a pipeline, and is sprayed onto a pavement base from a dispersing nozzle provided in the spray section. Is configured.

[0003]

Incidentally, the above-mentioned emulsion has a property of solidifying when the temperature is lowered. Therefore, when the operation of spraying the emulsion is stopped or after the operation is completed, the emulsion remains in the pipeline or the spray section. If there is, there is a problem that the emulsion coagulates and clogs a pipeline and a spray portion (particularly, a spray nozzle portion), and there is a problem to be solved by the present invention. In addition, it is not preferable to store the emulsion in the emulsion tank for a long time because the asphalt particles are separated and the particles are aggregated over time. It is desirable to charge and discharge the emulsion tank.
It is required that the discharging operation be performed easily and quickly, and there are also problems to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made to solve these problems, and is based on the emulsion supplied from an emulsion tank to a spray section. An emulsion dispersing apparatus for dispersing the emulsion on the base, a conveyor apparatus for supplying a pavement mixture onto the base on which the emulsion is dispersed, and a spreading apparatus for spreading the pavement mixture. In the paving machine provided, the emulsion dispersing device includes a washing unit for cleaning the emulsion dispersing device. And by doing this,
A problem that the emulsion dispersing apparatus can be washed by the washing means after the emulsion dispersing operation is completed, so that the emulsion remaining in the spray section and the emulsion flow path is solidified or agglomerated to cause clogging. Can be avoided, and highly reliable emulsion spraying can be performed. In this apparatus, the cleaning means can be configured to include a cleaning liquid tank for storing the cleaning liquid, a pipe connecting the cleaning liquid tank and the spray section, and a pump for sending the cleaning liquid to the spray section. In this case, by sharing the pump with the pump for sending the emulsion in the emulsion tank to the spray unit, there is no need to mount a new pump, which is advantageous in terms of space and cost.
In addition, by providing valves for opening and closing the respective conduits in the pipeline from the emulsion tank to the spray section, the pipeline from the cleaning liquid tank to the spray section, and the pipeline from the spray section to the cleaning liquid tank, The emulsion or the washing liquid can be sent to the spray section based on the switching of the valve. Further, while a filter is provided in the emulsion flow path from the emulsion tank to the spray section, the cleaning liquid can also be washed in a configuration in which the cleaning liquid passes from the cleaning liquid tank to the spray section via the filter. . In these devices, the emulsion dispersing apparatus further comprises an external connection pipe connecting an openable and closable external connection port to the emulsion tank, and an emulsion supplied from the external connection port via the external connection pipe. By providing a pump for discharging the emulsion in the emulsion tank from the external connection port while feeding the emulsion to the tank, it is possible to easily and quickly input the emulsion before starting the emulsion spraying operation and discharge the emulsion after the operation is completed. Therefore, workability is improved. In this case, the pump is shared with a pump for sending the emulsion in the emulsion tank to the spray section and / or a pump for sending the washing liquid to the spray section, so that a new pump does not need to be mounted, and space and cost are reduced. It is economically advantageous. In this case, by arranging a valve for opening and closing the pipe in the external connection pipe, the emulsion can be charged and discharged based on the switching of the valve. Furthermore, to the emulsion spraying device,
For those equipped with an emulsion return line for returning the emulsion sent from the emulsion tank to the spray section to the emulsion tank, the emulsion is passed through the emulsion return line before the spraying or when the spraying is stopped. By circulating, it is possible to keep the temperature of the emulsion flow channel and the spray portion, and it is possible to prevent the emulsion from coagulating due to a decrease in temperature and causing clogging. In this case, by arranging a valve for opening and closing the return line for the emulsion, circulation of the emulsion can be performed based on switching between opening and closing of the valve. Also, by arranging the valves for opening and closing the respective pipes in the vicinity of the emulsion tank, it is possible to easily manage the valves, or connect these valves to the emulsion tank, the washing liquid tank, the pump, the filter, etc. This is convenient because the length of the pipeline can be shortened.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 denotes a paving machine for drainage pavement, which pavement machine 1 sprays a highly adherent emulsion on a water-impermeable base, and forms a porous asphalt mixture having a high porosity thereon. A hopper 2 is provided at the front of the fuselage, and a bar feeder 3 which conveys the mixture supplied to the hopper 2 to the rear of the fuselage. An emulsion dispersing device 4 described below for dispersing the emulsion on the substrate; a screw spreader 5 for uniformly dispersing and spreading the mixture conveyed by the bar feeder 3 onto the substrate on which the emulsion is dispersed; and the screw spreader 5 And various member devices such as a screw device 6 for spreading the mixture. The screw device 6 is configured to be expandable and contractible in the left-right direction so that the left-right width can be adjusted according to the pavement width.

The emulsion dispersing apparatus 4 includes an emulsion tank 7 for storing an emulsion, a heater 8 for heating the emulsion in the emulsion tank 7, a spray unit 9 for dispersing the emulsion on a base, and a cleaning liquid tank 11 for storing a cleaning liquid. , A pump 12 for sucking and discharging an emulsion or a washing liquid, a hydraulic motor 12a for driving the pump 12, a member device such as a filter 13, a pipe 14 connecting these member devices, a valve 15 provided in each pipe, etc. The emulsion tank 7 is provided at a substantially central portion of the pavement machine 1 in the longitudinal direction of the machine.
It is arranged so as to cover substantially the entire width in the lateral direction of the machine. The washing liquid tank 11 and the pump 12 are
The filter 13 is disposed above the emulsion tank 4. Further, the spray unit 9 includes a pipe-shaped spray bar 10 oriented in the lateral direction of the machine body, and a plurality of spray nozzles 10a arranged at predetermined intervals on the spray bar 10. In the present embodiment, the spray bar 10 is provided at a front portion and a rear portion of the body, and the front spray bar 10 is disposed between the front bumper 16 and the front end of the bar feeder 3, and The spray bar 10 is disposed between the rear ends of the left and right crawler traveling bodies 17 and the front end of the screw spreader 5. Here, the rear spray bar 10 is composed of a pair of front and rear spray bars 10A and 10B which can move in the left and right direction, and has a left and right width corresponding to the pavement width similarly to the screw device 6. It can be adjusted.

The emulsion dispersing device 4 includes a circulating means for circulating the emulsion before spraying or when the spraying is stopped, and an emulsion tank, in addition to the dispersing means for dispersing the emulsion supplied to the spray bar 10 from the dispersing nozzle 10a onto the base. 7 is provided with a charging / discharging means for charging / discharging the emulsion, and a cleaning means for cleaning the filter 13, the pipe 14, the spray section 9 and the like with a cleaning liquid.

Next, the piping 14 of the emulsion dispersing apparatus 4 will be described with reference to the schematic piping diagram shown in FIG. In FIG. 6, 7 is the emulsion tank, 10 and 10 as described above.
A, 10B is a spray bar, 10a is a spray nozzle, 11
Denotes a cleaning liquid tank, 12 denotes a pump, 13 denotes a filter, and 14A denotes a first valve 15A from the emulsion tank 7.
14B is a second pipe from the first valve 15A to the filter 13, 14C is a third pipe from the filter 13 to the suction port of the pump 12, and 14D is a pump 1
The fourth pipe connected to the discharge port No. 2 and 14E are the fourth pipe 1
A fifth pipe from 4D to the third valve 15C, a sixth pipe 14F from the third valve 15C to the front spray bar 10, and a fourth pipe 14G branching from the middle of the sixth pipe 14F to the rear spray bar 10. Seventh pipe, 14H is the eighth pipe from the front spray bar 10 to the sixth valve 15F, 14H
J is a ninth pipe merging from the rear spray bar 10 to the middle part of the eighth pipe 14H, 14K is a tenth pipe from the sixth valve 15F to the emulsion tank 7, and 14L is a cleaning liquid tank 11.
An eleventh pipe from the second pipe to the filter 13 via the ninth valve 15J, 14M a twelfth pipe branched from the eighth pipe 14H to the cleaning liquid tank 11 via the eighth valve 15H, and 14N an external connection port Tenth valve 1 connected to 18
A thirteenth pipe connecting the 5K and the fifth valve 15E, 14
P is a fourteenth pipe merging from the fifth valve 15E to the second pipe 14B, and 14Q is a fourteenth pipe from the fourth pipe 14D to the second valve 15B.
The fifteenth pipe leading to B, 14R is the sixteenth pipe leading from the second valve 15B to the emulsion tank 7, and 14S is the fourth pipe 14D
A seventeenth pipe from the fourth valve 15D to the fourth valve 15D, and an eighteenth pipe 14T joining the fourth valve 15D to the thirteenth pipe 14N. Further, reference numeral 15G denotes a seventh valve for opening and closing the spray nozzle 10a, and a plurality of the seventh valves 15G are provided corresponding to the respective spray nozzles 10a.

Here, the first to ninth valves 15A to 15A
5J is an air operator valve that is opened and closed by compressed air, and 10th valve 15K is a manual valve that is manually opened and closed. Of these valves, the seventh valve 15G is disposed on the spray bar 10, while the first to sixth valves 15A to 15F are disposed on the upper surface of the emulsion tank 7 in a line, and The eighth valve 15H and the tenth valve 10K are disposed on the rear side of the emulsion tank 7, and the ninth valve 15J is a filter 13
It is arranged above.

On the other hand, reference numeral 19 denotes a compressor mounted on the pavement machine 1. The compressed air supplied from the compressor 19 is accumulated in an air tank 20 and
0 through the corresponding solenoid valve 21 and the air line, the air operator-type first to ninth valves 15A to 15
J and supplied to these first to ninth valves 15A to 15A.
It is configured to open and close J. Then, in the emulsion dispersing device 4, the operator operates the control panel 23 disposed in the driver's seat 22 to operate the electromagnetic valve 21, thereby opening and closing the first to ninth valves 15A to 15J. At the same time, based on the manual opening and closing of the tenth valve 15K, the emulsion is sprayed on the substrate, the emulsion is circulated before or during the time when the spraying is stopped, the emulsion is charged into and discharged from the emulsion tank 7, and after the spraying operation is completed. It is configured so that the emulsion dispersing device 4 can be washed. In this case, for example,
The control panel 23 is provided with selection means (not shown) such as a selection switch for selecting any one of the above-mentioned operations of spraying the emulsion, circulating the emulsion, feeding the emulsion, discharging the emulsion, and washing, and based on the selection of the selection means, First to ninth valves 15A to 15 corresponding to work
The electromagnetic valve 21 may be automatically controlled so that the opening and closing operation of J is performed. In this manner, the switching operation of the plurality of valves 15 corresponding to each operation can be performed by a one-touch operation by the selection unit.

First, when spraying the emulsion on the substrate, the first, third, and seventh valves 15A, 15C, 15C are used.
While opening G, the second, fourth, fifth, sixth, eighth, ninth,
Tenth valves 15B, 15D, 15E, 15F, 15H,
15J and 15K are closed (first to ninth valves 15A to 15A).
The opening and closing of 5J can be configured to be automatically performed by selecting the emulsion spraying operation by the selecting means in the apparatus provided with the aforementioned selecting means. The same applies hereinafter), and the pump 12 is driven. Thereby, the emulsion in the emulsion tank 7 is supplied to the emulsion suction port 14 at the lower end of the first pipe 14A.
Aa, the first pipe 14A, the first valve 15
A, second pipe 14B, filter 13, third pipe 14
C, pump 12, fourth pipe 14D, fifth pipe 14E, third valve 15C, sixth pipe 14F, and seventh pipe 14
G, front and rear spray bars 10, seventh valve 1
Via 5G, it is spread on the base from the spray nozzle 10a. In this case, the seventh valve 15G that opens and closes the spray nozzle 10a is variously opened and closed according to the adopted spray method. For example, the seventh valve 1
When the 5G is controlled to be always open, the emulsion is continuously sprayed from the spray nozzle 10a, and when the seventh valve 15G is controlled to be opened intermittently at a predetermined time, the emulsion is sprayed for a predetermined time. Intermittent emulsion spraying can be performed every time.

If the emulsion is to be circulated before spraying or when spraying is stopped, the first, third and sixth valves 15
A, 15C, 15F are opened, while the second, fourth, fifth, seventh, eighth, ninth, tenth valves 15B, 15D, 15E,
15G, 15H, 15J and 15K are closed, and the pump 12 is closed.
Drive. Thus, the emulsion in the emulsion tank 7
The first pipe 14 is sucked from the emulsion suction port 14Aa.
A, first valve 15A, second pipe 14B, filter 1
3, third pipe 14C, pump 12, fourth pipe 14D, fifth pipe 14E, third valve 15C, sixth pipe 14F and seventh pipe 14G, front and rear spray bars 10,
Eighth pipe 14H, ninth pipe 14J, sixth valve 15
F, returning to the emulsion tank 7 from the emulsion inlet 14Ka at the lower end of the tenth pipe 14K via the tenth pipe 14K. The emulsion is heated by the heater 8 in the emulsion tank 7. The heated emulsion circulates as described above, so that the emulsion can be uniformly heated, and the piping 14 or The spray section 9 can be kept warm. Here, the heater 8 is disposed on the bottom side of the emulsion tank 7 so that even if the amount of the emulsion in the emulsion tank 7 becomes small, the heater 8 is surely heated.

Further, when the emulsion is charged into the emulsion tank 7, an emulsion supply outlet (not shown) extending from an emulsion supply vehicle or the like is connected to the external connection port 18, and the tenth, fifth, and second emulsion ports are connected. While opening the valves 15K, 15E, 15B, the first, third, fourth, sixth, seventh, eighth, ninth valves 15
A, 15C, 15D, 15F, 15G, 15H, 15J
Is closed, and the pump 12 is driven. Thereby, the emulsion supplied from the external connection port 18 is supplied to the thirteenth pipe 14N,
Fifth valve 15E, fourteenth pipe 14P, second pipe 15
B, filter 13, third pipe 14C, pump 12, fourth pipe 14D, fifteenth pipe 14Q, second valve 15B,
The emulsion is supplied to the emulsion tank 7 from the emulsion inlet 14Ra at the lower end of the sixteenth pipe via the sixteenth pipe 14R.

On the other hand, when the emulsion is discharged from the emulsion tank 7, the emulsion supply / discharge port is connected to the external connection port 18, and the first, fourth, and tenth valves 15A, 15D,
While opening 5K, the second, third, fifth, sixth, seventh, eighth, ninth valves 15B, 15C, 15E, 15F, 15
G, 15H, and 15J are closed, and the pump 12 is driven. Thereby, the emulsion in the emulsion tank 7 is sucked from the emulsion suction port 14Aa, and the first pipe 14A and the first valve 1
5A, second pipe 14B, filter 13, third pipe 14
C, pump 12, fourth pipe 14D, seventeenth pipe 14S,
Fourth valve 15D, eighteenth pipe 14T, thirteenth pipe 14
N, and is discharged from the external connection port 18 via the tenth valve 15K.

Further, the filter 1 may be used after the work is completed.
In cleaning the 3, the pipe 14, and the spray unit 9, the ninth, third, and eighth valves 15J, 15C, and 15H are opened, while the first, second, fourth, fifth, sixth, and sixth valves are opened. Seventh, tenth valve 15A, 15B, 15D, 15E, 15F, 15G, 1
5K is closed, and the pump 12 is driven. This allows
The cleaning liquid in the cleaning liquid tank 11 includes an eleventh pipe 14L, a ninth valve 15J, a filter 13, a third pipe 14C, a pump 12, a fourth pipe 14D, a fifth pipe 14E, a third valve 15C, a sixth pipe 14F, Seventh pipe 14G, spray bar 10, eighth pipe 14H and ninth pipe 14J,
The control returns to the cleaning liquid tank 11 via the eighth valve 15H and the twelfth pipe 14M. By circulating the cleaning liquid in this manner, the filter 13, the pipe 14, and the spray unit 9 are cleaned. Further, in performing the cleaning, the seventh valve 15G is opened and the cleaning liquid is sprayed from the spray nozzle 10a, so that the spray nozzle 10a can be cleaned. In this case, it is preferable to install a container or the like that receives the cleaning liquid below the spray nozzle 10a. In the figure, reference numerals 33 and 34 denote cleaning tanks 1.
1 is a valve and a hose for discharging the cleaning liquid in 1.

Here, of the pipes 14, the first to fifth pipes 14A to 14E, the tenth pipe 14K, and the thirteenth to eighteenth pipes 14N to 14T correspond to the corresponding valves 15 and pumps 12. Most parts other than the connection part are provided in the emulsion tank 7. The sixth to ninth pipes 14
F to 14J pass through the emulsion tank 7 and protrude from the bottom side of the emulsion tank 7, extend therefrom to the front and rear spray bars 10, and are connected to the spray bars 10. The portions of the sixth to ninth pipes 14F to 14J connected to the spray bar 10 and the twelfth pipe 14
The portion of the M from the eighth valve 15H to the cleaning liquid tank 11 is formed of a flexible hose, but the other piping 14 is formed of a steel pipe. Further, most of the piping 14 provided in the emulsion tank 7 is disposed so as to be accommodated substantially in the latter half of the emulsion tank 7.

Further, during the above-described emulsion spraying, emulsion charging and discharging, and emulsion circulation, the emulsion in the emulsion tank 7 is sucked from the emulsion suction port 14Aa at the lower end of the first pipe 14A, while the lower end of the tenth pipe 14K or From the emulsion inlet 14Ka or 14Ra at the lower end of the sixteenth pipe 14R, the emulsion tank 7
The emulsion suction port 14Aa
Is located at a desired position in a concave portion 7a formed at the right front portion of the bottom surface of the emulsion tank 7 so as to be at the lowest position of the tank.
On the other hand, the emulsion inlets 14Ka and 14Ra are arranged as desired above a guide gutter 24 provided in the emulsion tank 7, and the guide gutter 24 receives the emulsion flowing from the emulsion inlets 14Ka and 14Ra. The lower end of the guide gutter 24 is further disposed so as to be positioned diagonally far from the suction port 14Aa, that is, at the rear left side of the emulsion tank 7. As a result, the emulsion flowing into the emulsion tank 7 from the emulsion inlets 14Ka and 14Ra is
a and 14Ra without being directly dropped on the emulsion surface (especially when the emulsion surface is low), is guided by the guide gutter 24 and guided downward into the emulsion tank 7 at a position far from the emulsion suction port 14Aa. In particular, when the amount of emulsion in the emulsion tank 7 is small, it is possible to prevent the inflowing emulsion from dropping onto the tank emulsion surface and forming bubbles, and even if bubbles are formed, the bubbles enter the emulsion suction port 14Aa. Care has been taken to avoid this.

The recess 7a desired by the emulsion suction port 14Aa is recessed at the bottom of the emulsion tank 7 so as to be at the lowest level of the tank as described above. Emulsion inlet 1 even if remaining
Although the emulsion can be sucked in from 4Aa, the recess 7a is provided with a discharge port 26 to which a discharge valve 25 that can be opened and closed is mounted. When the emulsion in the emulsion tank 7 is discharged from the external connection port 18 based on the driving of the pump 12, the emulsion tank 7
If a small amount of emulsion remains in the chamber, the discharge valve 2
By opening 5, the remaining emulsion can be discharged from the discharge port 26.

On the other hand, reference numeral 27 denotes an opening for inspection provided on the upper surface of the emulsion tank 7, and the opening 27 is openably and closably covered by an inspection lid 28. An overflow pipe 29 is provided so as to extend from the opening 27 through the inside of the emulsion tank 7 and below the bottom of the tank.

Further, a remaining amount indicator 30 indicating the remaining amount of the emulsion is provided above the emulsion tank 7, and the remaining amount indicator 30 is provided in the emulsion tank 7 so as to be vertically movable. The measured liquid level of the emulsion is displayed by the float 30a. Here, the float 30 a is arranged so as to be accommodated in the first half of the emulsion tank 7. That is, the float 30a is disposed in the front half of the emulsion tank 7, and the pipe 14 is disposed in the rear half of the emulsion tank 7 as described above, so that the float 30a interferes with the pipe 14. The space which can move up and down without being secured is secured. In the figure, reference numeral 31 denotes a pressure gauge for measuring the discharge pressure of the pump. A controller 32 controls the temperature of the heater 8.

In the apparatus constructed as described above, the paving machine 1 scatters the emulsion on the base by the emulsion dispersing device 4, while the mixed material which has been put into the hopper 2 and is conveyed to the rear of the machine by the bar feeder 3. The above-mentioned emulsion is spread evenly on the base on which the emulsion is spread by the screw spreader 5 and spread by the screw device 6. In this case, the emulsion spraying device 4 is further driven by the pump 12. Filter 1 by circulating the washing liquid based on
The washing of the emulsion dispersing device 4, such as the pipe 3, the pipe 14, and the spray unit 9, can be performed.

As a result, after the work is completed, the emulsion spraying apparatus 4 can be washed with the washing liquid, and the emulsion remaining in the filter 13, the pipe 14, the spray section 9 and the like is solidified or agglomerated as in the prior art. Thus, it is possible to avoid a problem that causes clogging, and to perform uniform and highly reliable emulsion spraying.

Further, since the emulsion can be charged into and discharged from the emulsion tank 7 through the external connection port 18 based on the driving of the pump 12, the emulsion can be charged before starting the spraying operation. Emulsion can be easily and quickly discharged after the work is completed, and workability is improved.

In addition, since the emulsion can be circulated based on the driving of the pump 12 when the emulsion is not being sprayed, the emulsion is heated by the heater 8 before the spraying or when the spraying is stopped. By circulating the emulsion, the emulsion can be uniformly heated, and the piping 14 and the spray section 9 can be kept warm. This prevents the emulsion from coagulating due to a decrease in temperature and causing clogging.

Further, the operations of the emulsion spraying device 4, the emulsion spraying, the washing, the feeding and discharging of the emulsion, and the emulsion circulation are switched between the first to tenth valves 15A to 15A corresponding to these operations.
Since it is only necessary to switch the opening and closing of 15K, it can be performed very easily.
Since all 2 are shared, there is no need to mount a new pump, which is advantageous in terms of space and cost.

The first to tenth valves 15A to 15A
K, the seventh valve 1 provided in the spray bar 10
Those other than 5G are arranged in the vicinity of the emulsion tank 7, so that it is convenient to manage the valves 15, or the plurality of valves 15 and the emulsion tank 7 and the vicinity of the emulsion tank 7 are arranged. Cleaning liquid tank 11, pump 12,
The piping 14 connecting the filter 13 can be shortened, and the arrangement of an air line for opening and closing the valve 15 can be simplified.

Further, since most of the piping 14 serving as the emulsion flow path except for the part connected to the spray bar 10 is disposed in the emulsion tank 7, there is almost no part exposed to the outside, so that it is clean. The appearance can be made In addition, since the pipes 14 provided in the emulsion tank 7 are kept warm by the emulsion heated by the heater 8, it is not necessary to separately consider the heat retention of these pipes 14, which is convenient. .

[Brief description of the drawings]

FIG. 1 is a right side view of a paving machine.

FIG. 2 is a left side view of the paving machine.

FIG. 3 is a plan view of the paving machine.

FIG. 4 is a plan view showing an emulsion dispersing apparatus.

FIG. 5 is a left side view showing the emulsion dispersing apparatus.

FIG. 6 is a schematic piping diagram of an emulsion dispersing apparatus.

FIG. 7 is a view showing an air line of a valve.

FIG. 8 is a plan view of an emulsion tank section.

FIG. 9 is a front view of an emulsion tank section.

FIG. 10 is a rear view of the emulsion tank section.

FIG. 11 is a left side view of the emulsion tank section.

FIG. 12 is a right side view of an emulsion tank section.

FIG. 13 is a sectional view taken along the line AA of FIG. 8;

FIG. 14 is a sectional view taken along line BB of FIG. 8;

FIG. 15 is a sectional view taken along line CC of FIG. 8;

FIG. 16 is a sectional view taken along line DD of FIG. 8;

FIG. 17 is a sectional view taken along line EE of FIG. 8;

18 is a sectional view taken along line FF of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pavement machine 3 Bar feeder 4 Emulsion spraying device 5 Screw spreader 6 Scroll device 7 Emulsion tank 9 Spray part 11 Cleaning liquid tank 12 Pump 13 Filter 14 Piping 15 Valve 18 External connection port

Claims (11)

[Claims] 1. An emulsion dispersing device for dispersing an emulsion supplied from an emulsion tank to a spraying unit on a substrate, a conveyor device for supplying a pavement mixture onto the substrate on which the emulsion is dispensed, A pavement machine provided with a leveling device for leveling the pavement mixture, wherein the emulsion dispersing device includes a washing unit for cleaning the emulsion dispersing device. Emulsion spraying equipment in machines. 2. The cleaning means according to claim 1, wherein the cleaning means includes a cleaning liquid tank for storing the cleaning liquid, a pipe connecting the cleaning liquid tank and the spray section, and a pump for sending the cleaning liquid to the spray section. An emulsion dispersing device for a pavement machine, characterized in that: 3. The emulsion dispersing apparatus according to claim 2, wherein the pump is used in common with a pump for sending the emulsion in the emulsion tank to the spraying section. 4. The method according to claim 2, wherein each of a pipeline from the emulsion tank to the spraying section, a pipeline from the cleaning liquid tank to the spraying section, and a pipeline from the spraying section to the cleaning liquid tank are respectively provided. An emulsion dispersing device for a pavement machine, wherein a valve for opening and closing is provided. 5. The method according to claim 2, wherein a filter is provided in the emulsion flow path from the emulsion tank to the spray section, and the cleaning liquid is from the cleaning liquid tank to the spray section via the filter. Emulsion spraying equipment for paving machines. 6. An emulsion dispersing apparatus according to claim 1, further comprising an external connection pipe connecting an openable and closable external connection port to the emulsion tank, and an external connection via said external connection pipe. While sending the emulsion supplied from the mouth to the emulsion tank,
A pump for discharging the emulsion in the emulsion tank from an external connection port. 7. The emulsion according to claim 6, wherein the pump is shared with a pump for sending the emulsion in the emulsion tank to the spray section and / or a pump for sending the washing liquid to the spray section. Spraying device. 8. An emulsion dispersing apparatus for a pavement machine according to claim 6, wherein a valve for opening and closing the external connection pipe is provided in the external connection pipe. 9. The emulsion dispersing apparatus according to claim 1, further comprising an emulsion return line for returning the emulsion sent from the emulsion tank to the spray section to the emulsion tank. Emulsion spraying equipment for paving machines. 10. The emulsion dispersing apparatus according to claim 9, wherein a valve for opening and closing the return line is provided in the emulsion return line. 11. An emulsion dispersing apparatus for a pavement machine according to claim 4, wherein the valves for opening and closing the respective conduits are collectively arranged near the emulsion tank.